Waterproofing coating.



UNrrsn STATES PATENT QFFICE...

STEFAN I-IANSEL'AND EUGEN HORNUNG, OF VIENNA, AUSTRIA-HUNGARY, ASSIGNORS TO BRUDER HANSEL, F BARN, AUSTRiA-HUNGARY.

WATERP ROOFING COATING.

SPECIFICATION forming part of Letters Patent No. 658,437. dated September 25, 1900.

Application filed January 21, 1898. serial No. 667,486. (No specimens.) 7

To all whom it may concern: tion depends upon the degree of suppleness Be it known that we, STEFAN HANSEL and to be obtained. For the purpose of preserv- EUGEN HORNUNG, subjects of the Emperor ing the albumen or gluten present in the mixof Austria-Hungary, residing at-Vienna, in ture unaltered the mixture has added to it a 5 the Province of Lower Austria, in the Empire small quantity (about one per cent. of the of Austria-Hungary, have invented certain quantity of albumen) of salicylic acid, carnew and useful Improvements in Waterproofbolic acid, or of any other suitable antiseptic. ing Coatings and impregnating Substances As examples of suitable proportions for the and Processes for the Manufacture of the mixture,.we give the following two, of which 10 Same; and we do hereby declare the followthe first is a coating or impregnating mass ing to be a full, clear, and exact description prepared without the addition of materials of the invention, such as will enable others forincreasingthesupplenessor flexibility-and skilled in the art to which it appertains to the second a similar mass with the addition make and use the same. of such materials: 1 This invention relates to a novel coating 1. Twenty-five parts,by weight, of albumen and impregnating mass for paper, fabric, felt, or gluten; twenty-five parts, by weight, of cellulose, wood-pulp, and in general for aniwater; 0.25 part, by weight, of salicylic acid mal and vegetable fibrous materials, which or carholic acid, and three to ten parts, by by treatment with the substance are rendered weight,of india-rubber, gutta-percha, or their 2o proof against the action of damp and at the substitutes.

same time remain supple or flexible and elas- II. Twenty-five parts, by weight, of albutic, the said materials also possessing the admen or gluten; twenty-five parts, by weight, vantage of greater strength than the known of water; 0.25 part, by weight, of salicylic rubber-treated papers and fabrics. acid or carbolic acid; five to thirteen parts, 25 The coating and impregnating mass conby Weight, of glycerin, syrup, fat, oil, or oiltains as its principal constituents albuminous rubber, and three to ten parts, by weight, of materials (albumen or gluten) and india-rubindia-rubber. ber, (or in place of the latter gutta-percha or It will be obvious that the mass can be suita substitute for india-rubber or gutta-percha ably colored by the addition of the required 0 or oilvarnish,) and may also contain, where coloring-matters without departing from the a high degree of flexibility or suppleness is principle of the invention. desired, an addition of glycerin, syrup, mo- The albumen contained in the substance is lasses, or of fat, oils, or the like. coagulated, when the mixture has been made,

In carrying out the process of manufacture in a known mannerfor example, by draw- 35 the albumen or gluten is dissolved cold in ing the material impregnated or coated with about the same quantity of water or of anthe mixture between hot rollers. The coaguother solvent. In a similar way a solution lation may, however, be effected previously of the same consistency is obtained of indiato having the mixture made, in which case rubber, gutta-percha, or their substitutes in the albumen or gluten dissolved in Water is 4o benzin or in another suitable solvent. The coagulated by heating and the coagulated two solutions are then intimately mixed tomass removed from the water and mixed with gether either by hand or by means of mixing the other above-named materials. apparatus of any suitable kind and in pro- The india-rubber (gutta-percha, &c.) in the portions which vary according to the articles coating or impregnating mass is vulcanized 45 to be manufactured. In case the mixture is in the known manner. The vulcanization can,

to be employed for obtaining as high a dehowever, if desired, be effected before the cogree as possible of suppleness or flexibility agulation of the albuminous substances conit has added to it substances, such as glyctained in the mixture. The two processes can erin, syrup, molasses, fats or oils, oil-rubber, also take place simultaneously by adding the too 50 (an artificial rubber made from linseed-0H,) substance, preferably sulfur, necessary for or vulcanized oil. The amount of this addithe vulcanization to the 'india rubber, the

with benzin, turpentine, or other known solvents before they are used in order to make them more appropriate for coating purposes and are then applied to the materials to be rendered waterproof by hand or by means of any known devices. The application can be repeated after each drying operation, accord? ing to the desired strength of the layer which it is desired to apply or according to the degree to which the impregnation is to be carried. The impregnation can be effected in the manner usually employed with other known impregnatingsubstances, or when it is a matter of converting loose fibrous materials to a plastic mass by felting the said fibers can be treated with the impregnating mass in kneading-machines to form a mass afterward to be molded. By these means we obtain upon the material to be treated a very flexible or supple'coating, which resembles india-rubber and is insoluble in water, or we obtain an impregnated material possessing these properties.

For the purpose of increasing the strength of paper rendered waterproof in the abovedesoribed manner we can press fabric upon the said paper immediately after the substance has been applied to it or we can press the fabric between two layers of paper so prepared, after which the said fabric or the maierial manufactured from paper and fabric is coated or impregnated with the mass. In order to impart a pleasing appearance to materials made waterproof by coating or impregnation,as above described, they can be passed in a known manner through smoothing or engraving rollers, so as to be highly polished or to receive a design of any desired kind.

We claim as our invention- 1. A moreor less fluid waterproofing composition consisting of albumen or gluten, a solution of india-rubber ora substitute thereof and an antiseptic, substantially as and in or about in the proportions set forth.

2. A more or less fluid waterproofing composition, consistiug of coagulated gluten or albumen, a solution of india-rubber ora substitute thereof, an antiseptic together with a fatty or oleaginous material, substantially as and in or about in the proportions set forth.

In witness whereof we have hereunto set our hands in presence of two witnesses.

STEFAN HANSEL. EUGEN HORNUNG. 

